@article{ref1,
title="Electrolyte-resistant dual materials for the synergistic safety enhancement of lithium-ion batteries",
journal="Nano letters",
year="2021",
author="Chou, Lien-Yang and Ye, Yusheng and Lee, Hiang Kwee and Huang, Wenxiao and Xu, Rong and Gao, Xin and Chen, Renjie and Wu, Feng and Tsung, Chia-Kuang and Cui, Yi",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="Safety issues associated with lithium-ion batteries are of major concern, especially with the ever-growing demand for higher-energy-density storage devices. Although flame retardants (FRs) added to electrolytes can reduce fire hazards, large amounts of FRs are required and they severely deteriorate battery performance. Here, we report a feasible method to balance flame retardancy and electrochemical performance by coating an electrolyte-insoluble FR on commercial battery separators. By integrating dual materials via a two-pronged mechanism, the quantity of FR required could be limited to an ultrathin coating layer (4 μm) that rarely influences electrochemical performance. The developed composite separator has a four-times better flame retardancy than conventional polyolefin separators in full pouch cells. Additionally, this separator can be fabricated easily on a large scale for industrial applications. High-energy-density batteries (2 Ah) were assembled to demonstrate the scaling of the composite separator and to confirm its enhanced safety through nail penetration tests.<p /> <p>Language: en</p>",
language="en",
issn="1530-6984",
doi="10.1021/acs.nanolett.0c04568",
url="http://dx.doi.org/10.1021/acs.nanolett.0c04568"
}